The MSM-04 Acguy was a mass production amphibious mobile suit developed by the Principality of Zeon. The “MS” in the model code refers to it being a mobile suit, while the “M” identifies it as a marine model. The “04” in the model code indicates that it was the fourth design.
On the back of its successful MS-06 Zaku II models, the Zeonic Company developed the MS-06M Zaku Marine Type variant for underwater combat. However, it proved to be a failure when deployed in battle. The Principality of Zeon was desperately developing a mobile weapon to advance its territories on Earth during the One Year War.
The Zeonic Company’s competitor, the Zimmad Company designed the MSM-03 Gogg that revolutionised the approach to a marine mobile suit. The Zimmad Company’s success prompted the Zeonic Company to develop a design with the same concepts.
On 30 November UC 0079, a squadron of Acguy units led by Zeon ace pilot Char Aznable were used to infiltrate the Earth Federation underground base Jaburo. Although the squadron failed to achieve its objective of destroying the Federation’s mobile suit factory, their successful infiltration highlighted the Acguy’s stealth abilities.
The MS-06M Zaku Marine Type was the first underwater-use mobile suit used by the Principality of Zeon. However, being a modified [MS-06F Zaku II], the Zaku Marine Type performed poorly and was condemned as a failed model. Based on the design concepts implemented in the MSM-03 Gogg, the MSM-04 Acguy was developed using internal parts from the Zaku II for use underwater and on land.
The Acguy was powered by two Zaku II powerplants. Despite the powerful reactors, the Acguy used sea water as a heat sink to allow it to maintain relatively low heat signatures. This made the Acguy ideal for covert operations.
The mobile suit used a modular forearm system that allowed it to switch its weapons. This allowed different Acguy units to be suited for different combat situations, making a team of these mobile suits a versatile strike force.
The Acguy was mounted with ranged weapons on its forearm and used a claw for close range combat.
The Acguy had four fire-linked vulcan guns mounted in on its head. They were used primarily against light-armoured support units. Sustained fire from the guns could damage mobile suits and were often used in close distance combat.
The right arm of the Acguy had a retractable claw. The claw was used in melee combat. The claw could be used to grip onto the enemy to allow point-blank attacks from the mega particle cannon or machine gun.
Six-tube rocket launcher
The Acguy had a six-tube rocket launcher built into its left arm. These were used for medium to long range attack.
Mega particle cannon
A mega particle cannon was mounted on centre of the right forearm of the Acguy’s mega particle cannon module. This drew power directly from the these guns drew energy directly from the mobile suit’s powerful reactors.
The machine gun forearm module could be used to replace the mega particle cannon module on the Acguy’s right forearm. This allowed the mobile suit to use projectile weaponry instead of particle weaponry.
Behind the scenes
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